return variantSelector;
    }

    public boolean getAllowNoMatchingVariants() {
        return allowNoMatchingVariants;
    }

    public abstract ImmutableAttributes getRequestAttributes();

    @Override
    public void visit(Visitor listener) {
        FileCollectionStructureVisitor.VisitType visitType = listener.prepareForVisit(this);

    variantSelector,
    artifactTypeRegistry,
    calculatedValueContainerFactory,
    allowNoMatchingVariants
) {
    // These attributes are ignored by the fixed artifact variant selectors
    override fun getRequestAttributes(): ImmutableAttributes = ImmutableAttributes.EMPTY
}


private
class RecordingVariantSet(
    private val source: FileCollectionInternal,
    private val attributes: ImmutableAttributes

			return
		}
		if !ok {
			resp.WriteErrorString(http.StatusUnauthorized, "Unauthorized")
			return
		}

		// Get authorization attributes
		attrs := s.auth.GetRequestAttributes(info.User, req.Request)

		// Authorize
		decision, _, err := s.auth.Authorize(req.Request.Context(), attrs)
		if err != nil {